U.S. patent application number 14/014610 was filed with the patent office on 2014-09-25 for antenna structure.
This patent application is currently assigned to Chiun Mai Communication Systems, Inc.. The applicant listed for this patent is Chiun Mai Communication Systems, Inc.. Invention is credited to YI-CHIEH LEE, YEN-HUI LIN.
Application Number | 20140285381 14/014610 |
Document ID | / |
Family ID | 51568763 |
Filed Date | 2014-09-25 |
United States Patent
Application |
20140285381 |
Kind Code |
A1 |
LEE; YI-CHIEH ; et
al. |
September 25, 2014 |
ANTENNA STRUCTURE
Abstract
An antenna structure includes a feed portion, a first radiating
body, and a resonating section. The first radiating body includes
first and second shared sections, and first, second, and third
extending sections. The resonating section and the first shared
section are connected to the feed portion and on receiving feed
signals. The first radiating body achieves a first required
frequency band. The first shared section and the resonating section
together resonate at a second required frequency band. The first
shared section and the second shared section together resonate at a
third required frequency band.
Inventors: |
LEE; YI-CHIEH; (New Taipei,
TW) ; LIN; YEN-HUI; (New Taipei, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chiun Mai Communication Systems, Inc. |
New Taipei |
|
TW |
|
|
Assignee: |
Chiun Mai Communication Systems,
Inc.
New Taipei
TW
|
Family ID: |
51568763 |
Appl. No.: |
14/014610 |
Filed: |
August 30, 2013 |
Current U.S.
Class: |
343/700MS |
Current CPC
Class: |
H01Q 9/42 20130101; H01Q
5/364 20150115; H01Q 9/04 20130101 |
Class at
Publication: |
343/700MS |
International
Class: |
H01Q 9/04 20060101
H01Q009/04 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 20, 2013 |
TW |
102109763 |
Claims
1. An antenna structure, comprising: a feed portion; a first
radiating body comprising a first shared section, a second shared
section, a first extending section, a second extending section, and
a third extending section connected in that order, the first shared
section connected to the feed portion; and a resonating section
connected to the feed portion; wherein when a feed signal is input
to the feed unit, the first radiating body achieves a first
frequency band, the first shared section and the resonating section
together resonate at a second frequency band, the first shared
section and the second shared section together resonate at a third
frequency band.
2. The antenna structure of claim 1, wherein the first shared
section, the second shared section, the first extending section,
the second extending section, the third extending section, and the
resonating section are coplanar.
3. The antenna structure of claim 1, wherein the first shared
section is perpendicularly connected to the feed portion and
extends away from the feed portion, the second shared section has
one end perpendicularly connected to a distal end of the first
shared section away from the feed portion and another end
perpendicularly connected to the first extending section.
4. The antenna structure of claim 3, wherein the first extending
section is perpendicularly connected to a distal end of the second
shared section away from the first shared section, extends towards
the feed portion, and is parallel to the first shared section; the
second extending section is connected to a distal end of the first
extending section away from the second shared section, extends
towards the first shared section, and is parallel to the second
shared section.
5. The antenna structure of claim 4, wherein the second shared
section, the first extending section, and the second extending
section are spaced apart and therefore cooperatively form a first
slot between them.
6. The antenna structure of claim 1, wherein the third extending
section is perpendicularly connected to a distal end of the second
extending section away from the first extending section, extends
towards the feed portion, and is parallel to the first shared
section.
7. The antenna structure of claim 6, wherein the third extending
section and the first shared section are spaced apart and therefore
cooperatively form a second slot between them.
8. The antenna structure of claim 1, wherein the resonating section
extends towards the first extending section, is parallel to the
second extending section and is spaced from the third extending
section.
9. The antenna structure of claim 1, wherein a central frequency of
the first frequency band is about 1575 MHz, a central frequency of
the second frequency band is about 5230 MHz, and a central
frequency of the third frequency band is about 2450 MHz.
10. An antenna structure, comprising: a feed portion; a first
radiating body comprising a first shared section, a second shared
section, a first extending section, a second extending section, and
a third extending section connected in that order, the first shared
section connected to the feed portion; a second radiating body
comprising the first shared section and a resonating section
connected to the feed portion; and a third radiating body
comprising the first shared section and the second shared section;
wherein when a feed signal is input to the feed unit, the first
radiating body receives and sends wireless signals of a first
frequency band, the second radiating body receives and sends
wireless signals of a second frequency band, and the third
radiating body receives and sends wireless signals of a third
frequency band.
11. The antenna structure of claim 10, wherein the first shared
section, the second shared section, the first extending section,
the second extending section, the third extending section, and the
resonating section are coplanar.
12. The antenna structure of claim 10, wherein the first shared
section is perpendicularly connected to the feed portion and
extends away from the feed portion, the second shared section has
one end perpendicularly connected to a distal end of the first
shared section away from the feed portion and another end
perpendicularly connected to the first extending section.
13. The antenna structure of claim 12, wherein the first extending
section is perpendicularly connected to a distal end of the second
shared section away from the first shared section, extends towards
the feed portion, and is parallel to the first shared section; the
second extending section is connected to a distal end of the first
extending section away from the second shared section, extends
towards the first shared section, and is parallel to the second
shared section.
14. The antenna structure of claim 13, wherein the second shared
section, the first extending section, and the second extending
section are spaced apart and therefore cooperatively form a first
slot between them.
15. The antenna structure of claim 10, wherein the third extending
section is perpendicularly connected to a distal end of the second
extending section away from the first extending section, extends
towards the feed portion, and is parallel to the first shared
section.
16. The antenna structure of claim 15, wherein the third extending
section and the first shared section are spaced apart and therefore
cooperatively form a second slot between them.
17. The antenna structure of claim 10, wherein the resonating
section extends towards the first extending section, is parallel to
the second extending section and is spaced from the third extending
section.
18. The antenna structure of claim 10, wherein a central frequency
of the first frequency band is about 1575 MHz, a central frequency
of the second frequency band is about 5230 MHz, and a central
frequency of the third frequency band is about 2450 MHz.
Description
BACKGROUND
[0001] 1. Technical Field
[0002] The disclosure generally relates to antenna structures and
particularly to an antenna structure having a wider bandwidth.
[0003] 2. Description of Related Art
[0004] To communicate in multi-band communication systems, a
bandwidth of an antenna of a wireless communication device such as
a mobile phone needs to be wide enough to cover frequency bands of
the multi-band communication systems. In addition, because of the
miniaturization of the wireless communication device, space
available for the antenna is reduced and limited. Therefore, it is
necessary to design the antenna to have the wider bandwidth within
reduced and limited spaces.
[0005] Therefore, there is room for improvement within the art.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Many aspects of the present disclosure can be better
understood with reference to the following drawings. The components
in the drawings are not necessarily drawn to scale, the emphasis
instead being placed upon clearly illustrating the principles of
the disclosure.
[0007] FIG. 1 is a schematic view of an antenna structure,
according to an exemplary embodiment.
[0008] FIG. 2 is similar to FIG. 1, but viewed from another
angle.
[0009] FIG. 3 is a diagram showing return loss measurements of the
antenna structure shown in FIG. 1.
DETAILED DESCRIPTION
[0010] FIG. 1 is a schematic view of an antenna structure 100,
according to an exemplary embodiment. The antenna structure 100 is
for use in a wireless communication device (not shown), such as a
mobile phone, a personal digital assistant, or a laptop
computer.
[0011] The antenna structure 100 includes a feed portion 10, a
first radiating body 30, a second radiating body 50, and a third
radiating body 70.
[0012] The feed portion 10 is electronically connected to a feed
terminal of a printed circuit board of the wireless communication
device (not shown), which feeds current for the antenna structure
100.
[0013] FIG. 2 shows that the first radiating body 30 includes a
first shared section 200, a second shared section 202, a first
extending section 31, a second extending section 33, and a third
extending section 35 connected in that order. In this exemplary
embodiment, the first shared section 200, the second shared section
202, the first extending section 31, the second extending section
33, and the third extending section 35 are coplanar. The first
shared section 200 is substantially strip-shaped. The first shared
section 200 is perpendicularly connected to the feed portion 10 and
extends away from the feed portion 10. The second shared section
202 is substantially strip-shaped. The second shared section 202
has one end perpendicularly connected to a distal end of the first
shared section 202 away from the feed portion 10 and another end
perpendicularly connected to the first extending section 31.
[0014] The first extending section 31 is parallel to the first
shared section 200 and is perpendicularly connected to a distal end
of the second shared section 202 away from the first shared section
200. The first extending section 31 extends towards the feed
portion 10.
[0015] The second extending section 33 is substantially
strip-shaped. The second extending section 33 is parallel to the
second shared section 202 and is perpendicularly connected to a
distal end of the first extending section 31 away from the second
shared section 202. The second extending section 33 extends towards
the first shared section 200. The second shared section 202, the
first extending section 31 and the second extending section 33 are
spaced apart and therefore cooperatively form a first slot S1
between them.
[0016] The third extending section 35 is substantially
strip-shaped. The third extending section 35 is perpendicularly
connected to a distal end of the second extending section 33 away
from the first extending section 31, extends towards the feed
portion 10, and is parallel to the first shared section 200. The
third extending section 35 and the first shared section 200 are
spaced apart and therefore cooperatively form a second slot S2
between them. By varying a length of the first radiating body 30
and the respective sizes of the first slot S1 and the second slot
S2, the antenna structure 100 can achieve a first required
frequency band (e.g., a frequency band of global positioning
system). In this exemplary embodiment, a central frequency of the
first required frequency band is about 1575 MHz.
[0017] The second radiating body 50 includes the first shared
section 200 and a resonating section 51. The resonating section 51
and the first shared section 200 are coplanar. The resonating
section 51 is substantially strip-shaped. The resonating section 51
is electronically connected to the feed portion 10, extends towards
the first extending section 31, and is parallel to the second
extending section 33. The resonating section 51 is spaced from the
third extending section 35. When current from the feed portion 10
flows through the resonating section 51 and the first shared
section 200, the resonating section 51 and the first shared section
200 generate a resonance, thereby rendering the antenna structure
100 receptive to a second required frequency band (e.g., a
frequency band of wireless local area network). In this exemplary
embodiment, a central frequency of the second required frequency
band is about 5230 MHz.
[0018] The third radiating body 70 includes the first shared
section 200 and the second shared section 202. When current from
the feed portion 10 flows through the first shared section 200 and
the second shared section 202, the first shared section 200 and the
second shared section 202 generate a resonance, thereby rendering
the antenna structure 100 receptive to a third required frequency
band. In this exemplary embodiment, a central frequency of the
third required frequency band is about 2450 MHz.
[0019] Referring to FIG. 3, when the antenna structure 100 is used,
a feed signal input from the printed circuit board of the wireless
communication device can be passed to the first shared section 200,
the second shared section 202, the first extending section 31, the
second extending section 33, and the third extending section 35 to
activate a first resonance mode for receiving and sending wireless
signals of the first required frequency band. Simultaneously, the
resonating section 51 and the first shared section 200 are driven
to resonate due to current flowing through the resonating section
51 and the first shared section 200, and a second resonance mode is
generated for receiving and sending wireless signals of the second
required frequency band. In addition, the first shared section 200
and the second shared section 202 are driven to resonate due to
current flowing through first shared section 200 and the second
shared section 202, and a third resonance mode is generated for
receiving and sending wireless signals of the third required
frequency band. Thus, the antenna structure 100 can transmit and
receive wireless signals of multiple frequency bands and has a
widened bandwidth.
[0020] The antenna structure 100 includes a plurality of radiating
bodies, and the first shared section 200 and the resonating section
51 can cooperatively create a new resonance mode so that a
bandwidth of the antenna structure 100 is widened. In addition, the
first radiating body 30 and the second radiating body 50 share the
first shared section 200, and the first radiating body 30 and the
third radiating body 70 share the first shared section 200 and the
second shared section 202, so that the entire volume of the antenna
structure 100 is reduced.
[0021] It is believed that the exemplary embodiments and their
advantages will be understood from the foregoing description, and
it will be apparent that various changes may be made thereto
without departing from the spirit and scope of the disclosure or
sacrificing all of its material advantages, the examples
hereinbefore described merely being preferred or exemplary
embodiments of the disclosure.
* * * * *